3D-Printable 3U Rack Frame Design

I need a 3D-printable 3U rack frame that holds four NVIDIA DGX Spark computers (each 150 × 150 × 50.5 mm, 1.2 kg) and their four power bricks (100 × 100 × 35 mm, cables exiting both ends, needs ~180 mm end-to-end clearance) in a Ubiquiti UniFi Toolless Mini Rack... (Budget: $250 - $750 AUD, Jobs: 3D CAD, 3D Design, 3D Modelling, 3D Print Design, 3D Printing, CAD/CAM, Product Design, Solidworks)